Smullyan, Raymond M. What is the name of this book?: The riddle of Dracula and other logical puzzles/ Raymond M. Smullyan. - Englewood Cliffs, N.J.: Prentice-Hall, c1978. - 241 p.: ill.; 22 cm. ISBN: 0139550887 LCCN: 77018692 //r97 Subjects--Topical Terms: Logic puzzles Dewey Class. No.: 510 / S666w